Need Help! X AXIS Freezes and all other axis keep moving


Results 1 to 10 of 10

Thread: X AXIS Freezes and all other axis keep moving

  1. #1
    Member
    Join Date
    Apr 2018
    Location
    United States
    Posts
    14
    Downloads
    0
    Uploads
    0

    Default X AXIS Freezes and all other axis keep moving

    Hello all, I'm having an issue with my machine. I have the older Vcon machine with a CRP800-00E-8 nema 34 plug and play setup. On longer runs, sometimes my X axis (gantry) will stop moving. Mach 3 continues to run and my z axis and both Y axis motors continue like there is no problem. This problem has been plaguing me on and off for a few years now. It was intermediate so I never cared that much but just chalked it up to Mach 3. Problem is now a days mistakes like that cost me several hundred dollars as I'm working with much pricier materials and end mills. I have to get this fixed.

    Recently I changed my PC from an older model to a newer one and installed the latest version of Mach 3 on Win 10. Previously I was running Mach 3 on XP on the old pc and still had the issue. So I know it's not my PC. If anyone can help with trouble shooting, I would appreciate it.

    Similar Threads:


  2. #2
    Member
    Join Date
    Apr 2010
    Location
    Canada
    Posts
    82
    Downloads
    0
    Uploads
    0

    Default Re: X AXIS Freezes and all other axis keep moving

    My first guess would be cabling. I would run some gcode that exercises the machine for a long time and work my way around the machine manipulating cables and connectors to see if I could make it fail. Something like a circular contour with a very small stepdown running at a relatively slow speed should give you lots of time to check out all the cabling.



  3. #3
    Member
    Join Date
    Apr 2018
    Location
    United States
    Posts
    14
    Downloads
    0
    Uploads
    0

    Default Re: X AXIS Freezes and all other axis keep moving

    Well I did 2 runs each today, both over 2 hours and no problems. I'm thinking maybe noise from my VFD. It's just so random. It'll do 20 runs flawless then out of no where X axis problems. I loaded up mach 4 today. I think I'm going to try it for a while and see if the problem comes up.



  4. #4
    Community Moderator ger21's Avatar
    Join Date
    Mar 2003
    Location
    Shelby Township
    Posts
    35475
    Downloads
    1
    Uploads
    0

    Default Re: X AXIS Freezes and all other axis keep moving

    Noise from the VFD would not stop one axis.
    I'd first swap cables between the bad axis and a good one, and see if the problem moves to the other axis.
    If not, then try swapping drives.

    My guess is a cable or connection issue as well.

    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)


  5. #5
    Member Insect's Avatar
    Join Date
    Apr 2020
    Posts
    2
    Downloads
    0
    Uploads
    0

    Default Re: X AXIS Freezes and all other axis keep moving

    CFandZ, Quite interesting. I have had the same problem since 5/2020 when I bought the machine. Some of the following notes may be helpful to you in diagnosis.

    Here is what I discovered:
    Stepper motor with factory damaged winding, I took it apart and saw it.
    Swapped motors and the problem went from Z axis to the X axis.
    Then the problem started again on the Z after getting new parts.
    Last night it started again on the Z.

    Each cycle has resulted in Avid giving me new parts. Since it is intermittent, assurance of a fix is uncertain. They gave me: 1) new control box, 2) new drivers, 3) 2 new motors and a cable

    It is hard to be certain what is up, I know moving a defective motor moved the problem (along with seeing the winding damage plainly).

    Feel free to follow my document on the malfunction, here: https://docs.google.com/document/d/1...it?usp=sharing
    The document reads from bottom upward chronologically. I welcome any conclusions you may infer after comparing the events.



  6. #6
    Member
    Join Date
    Apr 2018
    Location
    United States
    Posts
    14
    Downloads
    0
    Uploads
    0

    Default Re: X AXIS Freezes and all other axis keep moving

    Hello Insect, looks like you have been through the wringer with this problem. Well today I was doing a probing action and again my X axis stopped, All my other axis and mach 4 kept going. I opened up the control box and the top controller was flashing red. No power was going to the motor. I checked the wire but didn't see an issue. The only thing that fixed it was cycling the power. Everything appears to be tight and secure in the box. I think I'll send Avid an email and see what they recommend. This problem is costing me money



  7. #7
    Member
    Join Date
    Apr 2018
    Location
    United States
    Posts
    14
    Downloads
    0
    Uploads
    0

    Default Re: X AXIS Freezes and all other axis keep moving

    Quote Originally Posted by ger21 View Post
    Noise from the VFD would not stop one axis.
    I'd first swap cables between the bad axis and a good one, and see if the problem moves to the other axis.
    If not, then try swapping drives.

    My guess is a cable or connection issue as well.
    Well it certainly is not a VFD issue. I was doing a probing run today and it happen, I did see one of the drives were flashing red after the stepper lost power. I'll swap that one with one of my Y axis motors. All though it's really hard to tell what driver goes to which motor.



  8. #8
    Member
    Join Date
    Apr 2018
    Location
    United States
    Posts
    14
    Downloads
    0
    Uploads
    0

    Default Re: X AXIS Freezes and all other axis keep moving

    Quote Originally Posted by Insect View Post
    CFandZ, Quite interesting. I have had the same problem since 5/2020 when I bought the machine. Some of the following notes may be helpful to you in diagnosis.

    Here is what I discovered:
    Stepper motor with factory damaged winding, I took it apart and saw it.
    Swapped motors and the problem went from Z axis to the X axis.
    Then the problem started again on the Z after getting new parts.
    Last night it started again on the Z.

    Each cycle has resulted in Avid giving me new parts. Since it is intermittent, assurance of a fix is uncertain. They gave me: 1) new control box, 2) new drivers, 3) 2 new motors and a cable

    It is hard to be certain what is up, I know moving a defective motor moved the problem (along with seeing the winding damage plainly).

    Feel free to follow my document on the malfunction, here: https://docs.google.com/document/d/1...it?usp=sharing
    The document reads from bottom upward chronologically. I welcome any conclusions you may infer after comparing the events.
    I just looked at your video. I don't know if it is your issue but I know vacuums can create static electricity. I know when I was using a dust collection system I had to ground it. I know it will be messy but it may be worth trying a few runs without your vacuum hose.



  9. #9
    Member
    Join Date
    Apr 2018
    Location
    United States
    Posts
    14
    Downloads
    0
    Uploads
    0

    Default Re: X AXIS Freezes and all other axis keep moving

    Per Avid, looks like I have a bad driver. I was informed generally when a driver starts to blink red it indicates it's going bad. I have one on order. I'll report back after I've gotten the new one installed and run a dozen or so runs.



  10. #10
    Member
    Join Date
    Apr 2018
    Location
    United States
    Posts
    14
    Downloads
    0
    Uploads
    0

    Default Re: X AXIS Freezes and all other axis keep moving

    Quote Originally Posted by ger21 View Post
    Noise from the VFD would not stop one axis.
    I'd first swap cables between the bad axis and a good one, and see if the problem moves to the other axis.
    If not, then try swapping drives.

    My guess is a cable or connection issue as well.
    As always, Gerry is correct. There was a short in a wire. I've had dozen of hours ran after the fix with no problems. I did also change out the driver.



Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  


About CNCzone.com

    We are the largest and most active discussion forum for manufacturing industry. The site is 100% free to join and use, so join today!

Follow us on


Our Brands

X AXIS Freezes and all other axis keep moving

X AXIS Freezes and all other axis keep moving

X AXIS Freezes and all other axis keep moving